Interleukin-1 induced impairment in pancreatic islet oxidative metabolism of glucose is potentiated by tumor necrosis factor

作者：Decio Laks Eizirik · 发表于：European Journal of Endocrinology · 年份：1988 · DOI：10.1530/acta.0.1190321 · 被引用次数：77 · 研究领域：Pancreatic function and diabetes、Diabetes and associated disorders、Pancreatitis Pathology and Treatment

Recent observations suggest that human interleukin-1 (IL-1) causes functional impairment and death of pancreatic B-cells. This action seems to be potentiated by another cytokine, tumor necrosis factor (TNF). In the present investigation, the effects of recombinant human (r)IL-1 (10, 30 and 150 pmol/l), and a combination of rIL-1 and human rTNF (25 micrograms/l), on islet glucose metabolism were examined in the presence of D-[5-3H] and D-[6-14C) glucose. The utilization of glucose was not affected by rIL-1 or rIL-1 plus rTNF. However, rIL-1 induced a 40% decrease in glucose oxidation, which was further potentiated by the addition of rTNF. rTNF alone did not impair islet glucose utilization or oxidation. It is concluded that rIL-1 induces a perturbation of islet glucose handling, mainly at the mitochondrial level. This impairment in the oxidative metabolism of glucose is further increased by the addition of rTNF.